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Product short description:
  • 0 to 20mA DC, 0 to 100V DC, AC current (with optional sensor) input
  • Single or dual mechanical relays output
  • 10-36V DC or 115/230V AC power
  • 100% adjustable set-point, hi/lo fail-safe operation, jumper-selectable voltage/current input

361A, 461A: Limit Alarm; DC Voltage/Current Input, AC or DC-Powered Description

These alarms accept DC voltage/current input signals and provide relay output if the input exceeds user-defined set-point limits.

Numerous options and features make these alarms easy to use and well-suited for a wide range of limit monitoring and on/off controller applications. Three-way isolation eliminates ground loops to simplify installation.

And for easier use in the field, these alarms withstand extreme temperatures and have accessible set-point voltage test points. Other features include alarm/power status LEDs and independent set-point and dead band adjustment pots.

Models:

361A: DC-powered
461A: AC-powered

Input Ranges:

0 to 20mA DC
0 to 1V, 0 to 5V, 0 to 10V, 0 to 50V, 0 to 100V DC
0 to 20A AC (with external AC current sensor)

Output:

Electromechanical SPDT dry contact sealed relays; CSA rated for 5A

Power Requirements:

361A: 10 to 36V DC (0.9W max.)
461A: 115V AC (0.0320A) or 230V AC (0.016A)

361A, 461A: Limit Alarm; DC Voltage/Current Input, AC or DC-Powered Features & Benefits

  • 100% adjustable set-point via 15-turn pot handles more applications and provides better resolution
  • 100% adjustable dead band via 15-turn pot prevents false trips and eliminates alarm chatter
  • Set-point test points are accessible on front of unit for quick verification with digital voltmeter probe
  • Dual relays offer the flexibility of high/low, high/high, or low/low alarm set-point operation
  • Three-way isolation eliminates ground loops
  • Jumper-selectable DC voltage or current input reduces inventory stock
  • Jumper-selectable fail-safe operation enables alarm actuation on power loss in critical applications
  • Wide power supply range (361A) handles more applications to reduce inventory stock
  • DC power units (361A only) carry lower voltages and do not require expensive conduit for safer and easier installation
  • Diode-coupled power (361A only) supports the use of redundant power supplies for critical applications
  • Excellent accuracy, stability and no loose internal wiring ensure reliable alarm trips
  • Operating temperature range: -13°F to 167°F (-25°C to 75°C)
  • DIN rail G or T mount
  • No certification/approval required
How to Use a Toroidal AC Current Sensor - 8401044
Using Acromag’s Toroidal AC Current Sensor Model 5020-350 Transmitters with DC current input can be used in conjunction with an external toroidal AC current sensor in order to precondition an AC current input signal. This sensor is a highly accurate toroidal instrument transformer; which converts an AC current signal to a safe, low-level, DC milliampere...

Specs & Catalogs

Manuals

361A Series User Manual (Log in to download the file)

461A Series User Manual (Log in to download the file)

Additional information

Weight 16 oz
Dimensions 3 × 1 × 3.2 in
Part Number

361A-V0-DMRN-DIN-NCR: 10 to 36V DC-power; 0 to 10V DC, 100K ohm input impedance; dual alarm, two SPDT relays, 361A-V1-SMRN-DIN-NCR: 10 to 36V DC power; 0 to 1V DC input; single alarm, one SPDT dry-contact sealed relay, 461A-V1-DMRN-1-DIN-NCR: 115V AC power; 0 to 1V DC input; dual alarm, two SPDT relays; 115V AC ± 10% power

Product Series

FlatPack Series

  • Description

    361A, 461A: Limit Alarm; DC Voltage/Current Input, AC or DC-Powered Description

    These alarms accept DC voltage/current input signals and provide relay output if the input exceeds user-defined set-point limits.

    Numerous options and features make these alarms easy to use and well-suited for a wide range of limit monitoring and on/off controller applications. Three-way isolation eliminates ground loops to simplify installation.

    And for easier use in the field, these alarms withstand extreme temperatures and have accessible set-point voltage test points. Other features include alarm/power status LEDs and independent set-point and dead band adjustment pots.

    Models:

    361A: DC-powered
    461A: AC-powered

    Input Ranges:

    0 to 20mA DC
    0 to 1V, 0 to 5V, 0 to 10V, 0 to 50V, 0 to 100V DC
    0 to 20A AC (with external AC current sensor)

    Output:

    Electromechanical SPDT dry contact sealed relays; CSA rated for 5A

    Power Requirements:

    361A: 10 to 36V DC (0.9W max.)
    461A: 115V AC (0.0320A) or 230V AC (0.016A)

    361A, 461A: Limit Alarm; DC Voltage/Current Input, AC or DC-Powered Features & Benefits

    • 100% adjustable set-point via 15-turn pot handles more applications and provides better resolution
    • 100% adjustable dead band via 15-turn pot prevents false trips and eliminates alarm chatter
    • Set-point test points are accessible on front of unit for quick verification with digital voltmeter probe
    • Dual relays offer the flexibility of high/low, high/high, or low/low alarm set-point operation
    • Three-way isolation eliminates ground loops
    • Jumper-selectable DC voltage or current input reduces inventory stock
    • Jumper-selectable fail-safe operation enables alarm actuation on power loss in critical applications
    • Wide power supply range (361A) handles more applications to reduce inventory stock
    • DC power units (361A only) carry lower voltages and do not require expensive conduit for safer and easier installation
    • Diode-coupled power (361A only) supports the use of redundant power supplies for critical applications
    • Excellent accuracy, stability and no loose internal wiring ensure reliable alarm trips
    • Operating temperature range: -13°F to 167°F (-25°C to 75°C)
    • DIN rail G or T mount
    • No certification/approval required
  • Tech Papers

    How to Use a Toroidal AC Current Sensor - 8401044
    Using Acromag’s Toroidal AC Current Sensor Model 5020-350 Transmitters with DC current input can be used in conjunction with an external toroidal AC current sensor in order to precondition an AC current input signal. This sensor is a highly accurate toroidal instrument transformer; which converts an AC current signal to a safe, low-level, DC milliampere...
  • Specs & Data Sheets

    Specs & Catalogs

    Manuals

    361A Series User Manual (Log in to download the file)

    461A Series User Manual (Log in to download the file)

  • Additional information

    Additional information

    Weight 16 oz
    Dimensions 3 × 1 × 3.2 in
    Part Number

    361A-V0-DMRN-DIN-NCR: 10 to 36V DC-power; 0 to 10V DC, 100K ohm input impedance; dual alarm, two SPDT relays, 361A-V1-SMRN-DIN-NCR: 10 to 36V DC power; 0 to 1V DC input; single alarm, one SPDT dry-contact sealed relay, 461A-V1-DMRN-1-DIN-NCR: 115V AC power; 0 to 1V DC input; dual alarm, two SPDT relays; 115V AC ± 10% power

    Product Series

    FlatPack Series